In many income tax systems, such as this one for federal income tax, there is only one tax table for a given filing status and everyone with that status, in this case single, pays the same rate on each level of income. In 2020, for income between $0 and $9,875, the rate was 10%, for income between $9,876 and $40,125, the rate was 12%, for income between $40,126 and $85,525, the rate was 22%, for income between $85,526 and $163,300, the rate was 24%, for income between $163,301 and $207,350, the rate was 32%, for income between $207,351 and $518,400 the rate was 35%, and more income of $518,401 or more, the rate was 37%.
For federal income tax, there is only one tax table for each status and all filers of each status pay the same amount on each level of income. For single filers, a person whose income was $100,000 and a person whose income was $50,000 both paid a rate of 10% on the first $9,875 they earn, a rate of 12% on income between $9,876 and $40,125 and so on.